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Sunday, January 25, 2009

Diet advice the best way to drop pounds.

Low Carb (e.g., Atkins)Advises lots of protein, mostly in the form of meat at every meal, and restricts carbohydrates. Thirty percent of your calories will come from protein, 50 percent from fat, and about 20 percent from carbs, especially good ones like veggies and fruit.

Strawberry Low Fat (e.g., Weight Watchers)Emphasizes grains, fruits, and vegetables and allows modest servings of meat. Portion control is key. About 50 percent of your calories will come from carbohydrates, 30 percent from fat, and 20 percent from protein.

Mediterranean diet Prescribes grains, vegetables, and sources of healthy fats such as olive oil and nuts. About 45 percent of your calories on this plan will come from carbohydrates, 35 percent from fat, and 20 percent from protein.

The details:The women actually lost more pounds on the Mediterranean approach, but the finding wasn't conclusive. As is true in most diet studies, weight loss peaked at around six months, after which dieters began to put pounds back on. All groups saw improvements in cholesterol, insulin, glucose, triglyceride, and blood pressure levels.

2: Low Carb vs. Low Fat vs. Zone vs. OrnishThe details: These dieters also saw their heart disease risk factors—blood pressure, cholesterol, triglyceride levels—plummet at least as much as they did for people on the heart-healthy low-fat and Ornish diets. Again, most of the pounds were shed in the first six months, with many people gaining back some weight. By the end, in fact, many had stopped following their prescribed diets closely.

3:Low Fat vs. ExerciseThe details: a group of dieters followed a low-fat plan, while exercisers stuck to their usual eating patterns and worked out at least three days a week for 50 to 60 minutes at a gym. Though the dieters shed more pounds, some of the loss was in the form of calorie-burning muscle (the exercisers kept their muscle mass). As the researchers point out, muscle is key to helping dieters maintain weight loss. The results demonstrate the need to combine exercise and dieting.

And the Winners Are…

Low Carb and Exercise

A low-carb diet consistently produced the greatest weight loss, so this plan—combined with exercise—seems to be a good place to start. "I'm a proponent of that approach if it means you'll eat fewer junky carbs," says Christopher Gardner, PhD, associate professor of medicine at Stanford University and lead author of the study in Match 2 (above). But Gardner says dieters may need to try more than one plan before they find success. "We are all so different—a diet that works for me may not work for you," he says. Although low carb won in terms of average weight loss, each diet had a few adherents who managed to lose 30 to 40 pounds. "What's more important than diet type is how closely you can adhere to it," says Gardner.

The truth is, says Meir Stampfer, MD, of the Harvard School of Public Health and an author of the Match 1 study, "there is more than one way to go for weight loss, so don't get discouraged."